Fire extinguisher



March 15, 1932. H. T. STOKES 1,849,644

FIRE EXTINGUISHER Filed April 7, 1950 1 u 4.. ,a M AT/TIORNE .5

Patented Mar. 15, 1932 UNITED STATES PATENT OFFICE HARLOW T. STOKES, OFBROOKLYN, NEW YORK, ASSIGNOR TO INTERNATIONAL FIRE EQUIPMENTCORPORATION, OF WEST NEW BRIGHTON, STATEN ISLAND, NEW YORK,

A CORIBORATION OF DELAWARE FIRE EXTINGUISHER Application filed April 7,1930. Serial No. 442,135.

This invention relates to fire extinguishers and particularly to anextinguisher adapted for use in motor vehicles.

This invention has for its salient object to provide an extinguisher soconstructed that in case a fire breaks out the extinguisherwilliaiutomatically operate and extinguish the Further objects of theinvention will appear from the following specification taken inconnection with the drawings, which form a part of this application, andin which Fig. 1 is an elevational view partly in section showing anextinguisher constructed in accordance with the invention and mountedbeneath the hood of a motor vehicle; and

Fig. 2 is a detail sectional elevation of the structure shown in Fig. 1.

The invention briefly described consists of an extinguisher casing, andmeans for clamping the casing to the tie rod beneath the hood of a motorvehicle. The extinguisher casing houses a frangible container having afire extinguishing fluid or liquid therein and is provided withautomatically operatable means for breaking the container and releasingthe fire extinguishing liquid in case of fire.

Further details of the invention will appear from the followingdescription.

lnthe particular embodiment of the invention illustrated there is showna tie rod 10 of the usual construction which connects the radiator tothe dash'in a motor vehicle. The-fire extinguisher comprises a casing 11having a pair of clamps12 and 13 secured thereto and also secured to thetie rod 10. A frangible container 15 is mounted in the casing 11 and isheld against endwisemovement by a spring 16 which engages one end of thecontainer, a felt washer 17 preferably being interposed between thespringlG and the container 15.

The extinguisher casing 11 has extending laterally therefromintermediate the ends thereof 'a sleeve or projecting portion 20 whichcommunicates with the casing 11 through an opening 21. The casingextension 20 has a head or cover 22 secured to the outer end thereof andperforated as shown at 23. Perforations 24 are also formed in the outerend of the sleeve or extension 20.

A central opening 25 is formed in the head or cover 22 and a bushing 26is disposed in alinement with the opening 25 and extends inwardly intothe casing or sleeve 20 from the head 22. A plunger shank 30 is slidablymounted in the bushing 26 and a spring 31 surrounds the bushing andengages a spiked or pointed head 32 formed on the inner end of theplunger.

A boss 33 is formed on the outer surface of the head or cover 22 and isflared or provided with a bell mouth 34 communicating with the opening25. v

The outer end of the plunger shank 30 is shown as bifurcated and a link35 is pivoted thereto. The head or cover 22 has formed thereon aprojection 36 and in order to hold the'plunger 30 in its retracted orouter position the link 35 is swung at an angle to the shank 30 and theouter end of the link is connected by a fusible connection or link 40 tothe outer end of the projection 36. The fusible link may be of anydesired construction and in the drawings is shown as comprising a pairof overlapping strips 41 and 42 which are connected together by fusiblemetal or solder.

In order to limit the actuation of the plunger by the spring 31 the link35 has formed thereon a stop collar 43 which is adapted to engage theouter edge of the boss when the link is released and moves inwardly withthe plunger.

The device operates as follows: when a fire breaks out beneath the hoodof the vehicle the fusible link 40 will give way whereupon the link 35will swing about the outer edge of the bell mouth 34 of the boss 33. Thespring 31 will thereupon force the plunger inwardly causing the plungerhead 32 to engage and break the frangible container 15 thus releasingthe fire extinguishing liquid therefrom. The liquid will then flow bygravity through the openings 23 and 24 and the fire will beextinguished.

Although one specific embodiment of the invention has been particularlyshown and described, it will be understood that the invention is capableof modification and that changes in the construction and in thearrangement of the various cooperating parts may be made Withoutdeparting from the spirit or scope of the invention as expressed in thefollowing claims.

What I claim is:

1. In combination, a casing, a frangible container in said casing, atubular projection extending laterally from the casing intermediate theends thereof and communicating with the casing, a plunger carried bysaid projection, a spring for forcing the plunger against saidcontainer, a pivoted link connected to the plunger and movable therewithinto said projection, and fusible means engaging said link and a fixedmember for holding the plunger against actuation, said tubularprojection having discharge openings therein.

2. In combination, a casing, a frangible container in said casing, atubular projection extending laterally from the casing intermediate theends thereof and communicating with the casing, said projection havingdischarge openings therein, a plunger carried by said projection, aspring for forcing the plunger against said container, a pivoted linkconnected to the plunger and movable therewith, fusible means en agingsaid link and a fixed element for hol 'ng the plunger against actuation,and means on the link for limiting the movement of the plunger by saidspring].1

3. combination, a casing, a frangible container in said casing, atubular projection extending laterally from the casing intermediate theends thereof and communicating with the casing, said projection having adischarge outlet therein, a' plunger carried by said projection, aspring for forcing the plunger against said container, a pivoted linkconnected to the plunger and fulcrumed on said projection, and fusiblemeans enagin said link and a fixed element for holding the plunger aainst actuation.

HARL W T. STOKES.

